JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 4 April 2024, Shift 1, Physics Q35

Question 35 of 90 in this shift, Physics question 5 of 30, Section A.

If a rubber ball falls from a height h and rebounds upto the height of h/2. The percentage loss of total energy of the initial system as well as velocity ball before it strikes the ground, respectively, are :

(1) $50\%, \sqrt{gh}$
(2) $50\%, \sqrt{2gh}$ Official answer
(3) $40\%, \sqrt{2gh}$
(4) $50\%, \sqrt{\frac{gh}{2}}$

Official answer

Option 2

NTA final key.

Chapter: Work, Energy and Power
Topic: Collisions
Idea tested: N-th Bounce Height

Same topic in other shifts

All Collisions questions

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.